Ok last weekend I install 1.9 modified rockers on stock springs, stock pushrods and stock lifters. I used new comp cam reuse bolts and tighten them to 11ft/lbs and 90* after the first click. I went to start it up and it was ticking pretty loud so I shut off and didn't run it again. I was told to check lifter preload and I measured around .158 so I was maxxing out on the lifters. So I switched back to the stock rockers and now when I went to start it up it idles ruff and backfires. I don't know what to do or whats causing it. My mods are basic ported blower and lim with mps 3.4", headers, cai, 160 stat, overkill pcm and tr8 plugs. Please help!
